List of potential residents for 20l

So aside from my 25 gallon cube I have 20L that has completed it's cycle and ready for some residents to move in. I have put together a list of potential residents that I am interested in. mind you not all these fish going into this tank. this is just a list of fish I am interested in. it may only have a single occupant but no more than three. any opinions or suggestions will be greatly appreciated.

The Candidates:
Coral Beauty(possible poly eater jury out on this one)
Unarmed Perchlet
Yellow Assesor
Bicolor Blenny
Sailfin Blenny
Diadem Dottyback
Orchid Dottyback
Citron Clown Goby
Royal Gramma
Chalk Bass
Swissguard Basslet
Lyretail Hawkfish
Sixline Wrasse

The selection is also pending availability of stock in fish store

 

20 liter tank or 20g long?

For the 20 long i would say any except the coral beauty and the yellow assesor

 

20 gallon long and thank you

 

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Thanks Corailline, the way you answered my question makes it easier to decide what fish to choose. Glad the bass was safe for some reason I like this little fish.

 

I like the Chalk Bass a lot. It's one of those fish that is a lot more colorful in person with a mild temperament.

 

I don't want to overstock. I like to keep my stocking low so would three fish,maximum three inches each,be appropriate or is that pushing it. There is a protein skimmer and I perform 15% percent WC week.

 

I am really conservative when it comes to stocking. I have a 20 gallon tank with only a pair of clowns. I could probably add a Damsel or the Royal Gramma though. Or have you thought about Dartfish, the Firefish types?

 

I have heard of them but they don't really interest me. I was thinking of getting the bass and one of the blennies and keep it at that.

 

I agree about the coral beauty, too small of a tank. It won't do well in my opinion.